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Microchip Technology SMBG5369A/TR13
- Part No.:
- SMBG5369A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369A/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,996
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Product details
Overview
SMBG5369A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 51 V, ±10% tolerance (A-suffix), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges, supports surge currents up to 230 A (8.3 ms half-sine), and is used in overvoltage protection circuits for industrial power supplies and DC bus clamping.
For engineers reviewing the SMBG5369A/TR13 datasheet, SMBG5369A/TR13 pinout, SMBG5369A/TR13 application, or SMBG5369A/TR13 equivalent, key selection criteria include Zener voltage tolerance, maximum surge current rating, thermal resistance (RθJL = 25 °C/W), and RoHS compliance status (non-RoHS, Sn/Pb plating).
Technical Context
This device operates as a precision voltage reference and transient clamp in reverse-biased mode, with cathode indicated by band and rated for junction temperatures from –65 °C to +150 °C. Its dynamic impedance is 27 Ω at IZT = 25 mA, and it exhibits minimal voltage variation versus current due to low ZZK (93 Ω at 1 mA).
The SMBG5369A/TR13 delivers 5.0 W power dissipation at TL < 25 °C, derating linearly above that point per Figure 1. It meets MIL-STD-750 Method 1020 for ESD insensitivity and has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±10% at IZT = 25 mA - defines clamping threshold in overvoltage protection circuits |
| Power Dissipation (PD) | 5.0 W at lead temperature < 25 °C - requires thermal management on FR4 board with recommended pad layout |
| Max Surge Current (IZSM) | 230 A (8.3 ms half-sine) - enables robust transient suppression without failure |
| Dynamic Impedance (ZZT) | 27 Ω at IZT = 25 mA - ensures stable regulation under varying load current |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct heat conduction to PCB copper, critical for sustained power handling |
| Reverse Leakage (IR) | < 0.5 µA at VR = 41 V - guarantees low standby power loss in high-impedance bias networks |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in automotive under-hood and industrial motor drive environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; terminals are anode (unbanded end) and cathode (banded end). Designed for visible solder joints and compatible with standard reflow profiles (260 °C for 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; referenced ground in reverse-bias clamping | Connected to lower-potential node (e.g., GND or return path) during Zener operation |
| Cathode | Current exit terminal in forward bias; high-side clamp node in reverse bias | Banded terminal connected to protected rail (e.g., 48 V DC bus) to shunt overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow yield on automated SMT lines |
| Level 1 moisture sensitivity | No dry pack or baking required before assembly - reduces manufacturing overhead |
| High IZM rating | 125 mA max regulator current - supports stable regulation across wide operating current range |
| Non-ESD-sensitive | Qualified per MIL-STD-750 Method 1020 - eliminates ESD handling controls in production |
Applications
| Industrial Power Supply Protection | DC Bus Overvoltage Clamp |
|---|---|
Use Scenario: Protects switching regulator feedback nodes and auxiliary rails from input transients in 24–48 V industrial SMPS. IC Role / Device Role / Timing Role: Voltage reference and shunt clamp in parallel with regulated output. Use Value: Maintains regulation accuracy within ±10% while absorbing 230 A surges without degradation. |
Use Scenario: Clamps 48 V DC bus during regenerative braking or capacitor discharge events in motor drives. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across bus capacitors. Use Value: Limits bus voltage to ≤56.1 V (51 V × 1.1) during 8.3 ms surges, preventing IGBT gate oxide damage. |
| Telecom Line Card Surge Suppression | Test Equipment Reference Stability |
Use Scenario: Secondary protection stage after TVS arrays on -48 V telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Precision clamping element in multi-stage protection network. Use Value: Provides tighter voltage tolerance (±10%) than primary TVS, improving downstream circuit margin. |
Use Scenario: Stable voltage reference in portable multimeter front-end and calibration circuits. IC Role / Device Role / Timing Role: Low-drift Zener source for ADC reference divider networks. Use Value: Delivers 51 V reference with 27 Ω dynamic impedance, minimizing error from load current variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Same VZ, tolerance, and IZM; axial-leaded T-18 package instead of DO-215AA | Requires through-hole assembly and larger board area; not suitable for high-density SMT layouts | Select when legacy through-hole compatibility or manual repairability is prioritized over board space |
| SMBJ5369A | Same VZ and tolerance, but J-bend DO-214AA package; RθJA = 90 °C/W vs. 90 °C/W (same), but RθJL not specified | Compatible with same footprint class but different lead geometry; less visible solder joint inspection capability | Select when existing DO-214AA tooling is in place and gull-wing visual verification is not required |
Compared with SMBG5369A/TR13, 1N5369B offers identical regulation performance but mandates through-hole assembly, while SMBJ5369A provides surface-mount compatibility with reduced mechanical inspection confidence due to J-bend leads.
Availability
SMBG5369A/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, DC bus overvoltage clamp, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG5369A/TR13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The SMBG53xxA/B series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-surge industrial systems where JEDEC-compatibility and visual process control are essential.
FAQ
What is the Zener voltage tolerance for SMBG5369A/TR13?
The SMBG5369A/TR13 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in its part number. This means its breakdown voltage is guaranteed between 45.9 V and 56.1 V at IZT = 25 mA and TL = 25 °C. This tolerance directly impacts clamping accuracy in overvoltage protection circuits using SMBG5369A/TR13.
Is SMBG5369A/TR13 RoHS compliant?
No, SMBG5369A/TR13 is not RoHS compliant. The "A" suffix indicates Sn/Pb plating, not matte-tin RoHS-compliant finish (which would carry "e3" suffix, e.g., SMBG5369Be3). This distinction affects soldering profile selection and environmental compliance reporting for SMBG5369A/TR13 in EU-marketed products.
What is the maximum continuous Zener current for SMBG5369A/TR13?
The maximum continuous Zener current (IZM) for SMBG5369A/TR13 is 125 mA at TL < 25 °C, calculated per Note 3 in the datasheet using P = 5.0 W and VZM = 51 V × 1.1 = 56.1 V. Exceeding this current without adequate heat sinking risks thermal runaway and permanent failure of SMBG5369A/TR13.
How does SMBG5369A/TR13 compare to SMBJ5369A in terms of thermal performance?
SMBG5369A/TR13 specifies RθJL = 25 °C/W (junction-to-lead), enabling direct thermal conduction to PCB copper, whereas SMBJ5369A does not publish RθJL. Both share RθJA = 90 °C/W on FR4, but SMBG5369A/TR13's gull-wing design provides superior thermal path control - a key reliability advantage for SMBG5369A/TR13 in thermally demanding applications.
Can SMBG5369A/TR13 be used as a direct replacement for 1N5369B?
Yes, SMBG5369A/TR13 is electrically equivalent to 1N5369B per the datasheet: identical VZ, tolerance, IZT, ZZT, and surge ratings. However, SMBG5369A/TR13 uses DO-215AA surface-mount packaging versus 1N5369B's axial T-18, so PCB layout and assembly process must be updated - SMBG5369A/TR13 is not a mechanical drop-in for 1N5369B.
SMBG5369A/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-215AA, SMB Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 27 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 36.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG5369A/TR13 FAQ
1.How can I place an order for SMBG5369A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369A/TR13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBG5369A/TR13 reliable?
The price and inventory of SMBG5369A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369A/TR13?
SMBG5369A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369A/TR13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBG5369A/TR13?
For technical support, including SMBG5369A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369A/TR13 requirements.
6.How does Aetrix verify that SMBG5369A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369A/TR13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBG5369A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369A/TR13?
All SMBG5369A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369A/TR13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBG5369A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369A/TR13 Tags
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